I am looking for a 30x30 fiberglass shower stall to replace the old one which was installed in 1985.I am only finding 32x32. The space is NOT big wnough for the 32x32 SO I AM DEPSERATE..........THe fiberglass base is 30x30 and the walls are one unit ( 3 side pop open ) which is inseerted into the base and the chaulked. Need manufacturers phone number or location in Massachusetts to purchase.Thank you